:root {
  --void: #0a0a0b;
  --crimson: #e10600;
  --cyan: #00e5ff;
  --smoke: #a1a1aa;
  --panel: rgba(10, 10, 11, 0.82);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--void); color: #f4f4f5; font-family: Inter, system-ui, sans-serif; }
#stage { position: fixed; inset: 0; }
canvas { display: block; }
.top {
  position: fixed; top: 0; left: 0; right: 0; z-index: 3;
  display: flex; align-items: center; gap: 16px;
  padding: 14px 18px;
  background: linear-gradient(180deg, rgba(0,0,0,.72), transparent);
}
.mark { color: #fff; text-decoration: none; font-family: Anton, sans-serif; letter-spacing: .08em; font-size: 22px; }
.mark span { color: var(--crimson); }
.top p { color: var(--smoke); font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.cta {
  margin-left: auto; text-decoration: none; color: #fff;
  background: var(--crimson); font-family: Anton, sans-serif;
  letter-spacing: .06em; padding: 10px 14px; border-radius: 4px;
}
.panel {
  position: fixed; z-index: 3; left: 16px; top: 72px; width: min(360px, calc(100% - 32px));
  max-height: calc(100vh - 96px); overflow: auto;
  background: var(--panel); border: 1px solid #2a2e38; border-radius: 8px;
  padding: 18px; backdrop-filter: blur(10px);
}
.eyebrow { font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--cyan); }
h1 { font-family: Anton, sans-serif; font-weight: 400; font-size: 28px; line-height: 1; margin: 8px 0 10px; }
.hint { color: var(--smoke); font-size: 13px; margin-bottom: 14px; }
.panel section { margin: 12px 0; }
h2 { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: var(--smoke); margin-bottom: 8px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
button.opt {
  background: #14161c; color: #fff; border: 1px solid #2a2e38;
  border-radius: 4px; padding: 8px 10px; cursor: pointer; font: inherit; font-size: 13px;
}
button.opt.active { border-color: var(--cyan); color: var(--cyan); }
.edu { margin-top: 14px; border-top: 1px solid #2a2e38; padding-top: 12px; }
.edu h3 { font-family: Anton, sans-serif; font-weight: 400; font-size: 22px; margin: 6px 0; }
.edu p { color: #d4d4d8; font-size: 14px; }
.status {
  position: fixed; z-index: 4; bottom: 16px; left: 16px;
  font-family: "IBM Plex Mono", monospace; font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--cyan);
}
@media (max-width: 800px) {
  .panel { top: auto; bottom: 12px; max-height: 42vh; }
  .top p { display: none; }
  .status { display: none; }
}